| Issue Date | Title | Author(s) |
| 2001 | Analgesic Activity of Water Extract of Spilanthes acmella Flowers on Rats | Peiris, K.P.P.; Silva, G.K.J.; Ratnasooriya, W.D. |
| 2002 | Anti-inflammatory activity of decoction of leaves and stems of Anisomeles indica at pre-flowering and flowering stages | Dharmasiri, M.G.; Ratnasooriya, W.D.; Thabrew, M.I. |
| 2003 | Diuretic activity of leaf and stem decoctions of Anisomeles indica | Dharmasiri, M.G.; Ratnasooriya, W.D.; Thabrew, M.I. |
| 2004 | Diuretic activity of Spilanthes acmella flowers in rats | Ratnasooriya, W.D.; Peiris, K.P.P.; Samaratunga, U.; Jayakody, J.R.A.C. |
| 2006 | Effect of an indigenous drug formulation (Churna) on clotting of mammalian blood | Peiris, K.P.P.; Samaratunga, U.; Jayakody, J.A.R.C.; Ratnasooriya, W.D. |
| 2009 | Effects of zinc supplementation on sexual behavior of male rats | Dissanayake, D.; Wijesinghe, P.S.; Ratnasooriya, W.D.; Wimalasena, S. |
| 2007 | Evaluation of reproductive hormone profile in relation to semen quality in male partners of subfertile couples | Dissanayake, D.M.A.B.; Palihawadana, T.S.; Wijesinghe, P.S.; Ratnasooriya, W.D.; Wimalasena, S. |
| 2005 | Haematological parameters of three species of wild caught microchiropteran bats, Miniopterus schreibersii, Taphozous melanopogon and Hipposideros lankadiva in Sri Lanka | Ratnasooriya, W.D.; Udagama-Randeniya, P.V.; Yapa, W.B.; Digana, P.M.C.B.; Dharmasiri, M.G. |
| 2005 | Inflight and Outflight Activity Patterns of Five Species of Cave Dwelling Bats in Sri Lanka | Yapa, W.B.; Ratnasooriya, W.D.; Costa, H.H.; Rubsamen, R. |
| 2010 | Oral diuretic activity of hot water infusion of Sri Lankan black tea (Camellia sinensis L.) in rats. | Abeywickrama, K.R.; Ratnasooriya, W.D.; Amarakoon, A.M. |
| 2003 | Roost Selection of the Short-Nosed Fruit Bat, Cynopterus spp. in Sri Lanka | Digana, P.M.C.B.; Yapa, W.B.; Randeniya, R.V.; Ratnasooriya, W.D. |
| 2007 | Seminal Fructose Corrected for Motile Sperm Count is a Better Marker for the Evaluation of Seminal Vesicles Function | Dissanayake, D.M.A.B.; Wijesinghe, P.S.; Ratnasooriya, W.D.; Wimalasena, S. |
| 2005 | Serum levels of some biochemical constituents of captive Sri Lankan elephants (Elephas maximus maximus) | de Alwis, G.K.H.; Wijesekara, R.D.; Vithana, D.; Neththasinghe, N.; Ratnasooriya, W.D. |
| 2009 | A Study to access the prevalence of zinc abnormalities and the effect of zinc on semen parameters in subfertile population | Dissanayake, D.M.A.B.; Palihawadana, T.S.; Herath, H.M.R.P.; Wimalasena, S.; Ratnasooriya, W.D.; Wijesinghe, P.S. |
| 2003 | Water extracts of leaves and stems of pre-flowering but not flowering plants possess analgesic and antihyperalgesic activities in rat | Dharmasiri, M.G.; Ratnasooriya, W.D.; Thabrew, M.I. |
| 2006 | Zinc levels in seminal plasma and its relationship with semen parameters in male partners of sub fertile couples | Dissanayake, D.M.A.B.; Wijesinghe, P.S.; Ratnasooriya, W.D.; Wimalasena, S. |
